A thread on DPR with a 150 post limit will have NO IMPACT and will vanish when full. While I like others are tired of the topic.. putting you name on a petition is at least action towards a goal vs just noise on a board.

Post it to your other photo boards and see if maybe there are enough numbers to make an effect.

Using this language

To: Sony Alpha Design & Product Management

We the undersigned as Sony Alpha DSLR customers or those considering Sony Alpha DSLRs, understand that not all cameras can have all features, but feel that Mirror Lock-up MLU is feature that should be on any camera that supports the wired remote that can trigger the 2 sec time where MLU was on the A100 and A700.

This petition asks that if possible MLU be added to the following cameras by Firmware update if possible. (Service Manuals show the A200 and A700 shutter / mirror system is nearly identical)
A200
A300
A350
A500
A550

We also ask the Sony not design MLU out of future DSLR cameras.

Sincerely,

The Undersigned/

Since I did it I narrowed it to cameras with remote sockets that I think can seriously have users that will use a tripod and care about MLU.